Ledger book



C. L. HARVEY LEDGER BOOK Feb. 28, 1928. 1,660,923

Filed Jan. 5, 1925 Invader Patented Feb. 28, 192s.

UNITED STATES.

conBoN L. HARVEY. or r DETROIT, MICHIGAN.

Lanenaoox.

lApplication lred JanuaryA 3, 1925. v Serial No; 435. i

, invention relates to loose leaf. binders ofthe type shown anddescribed in United States Letters Patent No. 1,504,040, issued to C. L.Harvey August, 1924, and ,consists in improvements in the back frame.

One object of my invention is to provide an improved backl frameconstruction in which the binding post engaging strips are held inengaged position. i j

Another object is to provide this locking means in such a manner that itwill automatically hold the parts upon engagement of the binding Vostsby the strips. j

A further` o ject is `to`- provide for the parts a `locking means thatmay be disengaged without the use `ota special tool or instrument andwithout any extra eiort on the part of the operator. In the accompanyinging my inventionl Figure 1 is an elevationwith a side of the upper framebar removed to show the mechanism therein. j j

Figure 2`is a top view of the upper frame bar with the top wall removed.

drawings illustrat- Figure 3 'is in part an elevation and in part asection taken on line 3-3 'of Figure 2. y

Figure 4 is a cross section taken on line. 4-4ofFigure3. j j

The numeral 1 in the drawings indicates the base'or back member of myimproved loose leafnledger book.` 2 are expansible binding posts whichare preferably threaded into base 1. Binding posts 2 are provided withannular grooves 3 near their upper extremities. The upper frame bar 4 towhich the top cover (not shown) is hingedly connected is preferablyformed of .two channelshaped stampings `of sheet metal 5 and `6 whichenclose slotte-d lugs7 and 8 at their ends and are secured together byrivets 9 or by spot-welding to each other and to the lugs. Thisconstruction forms a hollow bar of rectangular cross section whichpossesses a high Adegree of rigidity for the weight and cost of materialand provides space for the post engaging mechanism. j

Two strips 10 and 11, preferably stampings, are slidably mounted in bar4. The inner end of each of said strips is partially cut away and theremaining corner is pivotally connected to a disk 12. Disk :12 isrotatably mounted on rivet orpin 9. The point of connection betweenstrip 10 and disk 12 is diametrically opposite the connection betweenstrip 11 and disk 12 and the strips 10and 11 extend in oppositedirections fromthe disk.

,The postsV 2` extend into bar 4 through openmgs` in) the undersidethereof and through the slotted portionsof lugs 7 and 8.

Strips 10 and 11 are slotted at 13and 14 in their outward ends. Theslotted portionsare ada ted to fit into annular grooves 3 on,V the bining postsand thus connect the bar4 with the remainder .of the ledgerbook.

j A fiat spring member 15 has one ofrits ends riveted to strip 10. Thiss ring is so tens-ioned that its tendency is to end away romthe strip towhich it isfastened except at its free extremity 15'- where it is bentslightly ina reverse direction or back toward the strip. .j

The channel-shaped stamping 5 jis provided with a` depressedportion 16`overthe free end of spring 15. Disposed longitudinally of said depressedportion'a'ndof said channel-shaped stamping vis a `slot 17 A tip orprojection 18 isV formed preferably on one side of slot 17A by makingtwofshort arallel cuts in the edge of said slot and j ending the portionbetween the cuts downproject to the interior of the hollow ar 4. iOpening `19 in s ring 15 is so located that when strips 10 an All'areextended as hereinafterexplained, the projection 18 will enterthis'opening and latch the variousparts in position.

A button 20 is riveted to spring member 15. The neck of said buttonextends through slot 17 so that its head 21, which is'of slightlygreater diameter than the width of the slot, is disposedexteriorly ofbar 4 indepressed portion 16. L

To use my` improved ledger book, the opcrater adjusts the expansiblebinding posts 2 to suit the heightof the number of leaves in use. Thebutton 20 is pushed to the inner limit of its movement and bar 4 withthe front cover `hingedly attached thereto is vplaced over the ends ofthe binding post. `Button 20 is then pushed to the outward wardly or insuchdireetion that the ti willv projection 18 and the spring isdepressedA suliiciently to permit. its passing under the projection. Thecoincidence of opening 19 in the spring member with projection 18permits spring 15 to return to its normal position, that is, bearingagainst the underside of depressed portion 16. This return causes anengagement vbetween a fixed member, the projection, and a movablemember, the spring, and firmly holds the post engaging mechanism inengaged position. The natural and only practical way of movingthe button20 is for the operator to push it with his linger since the head of thebutton lies in its groove below the normal surface of 'channel member 5.An almost imperceptible amount of downward aressure is required todepress spring 15 suflieiently to disengage projection 18 Jfrom opening19 to allow the button 2O to be moved to disengage the strips from theirrespective binding posts. The necessary downward pressure isunconsciously7 provided by the operator in exerting suilicient effort tomove the button in its slot. Y

In my improved ledger book as described there is no necessity of using akey or any tool to operate the device.k No excess friction is requiredon any of the moving parts since they arel positively held in engagedposition. Another advantage is that the bar 4! of my device forms asubstantially dust proof case for the operating mechanism. This isprovided by the fact that spring 15 closes slot 17 when the stripsengage the binding post and the binding posts lill the vonly otheropenings.

v ly rebent, an operating button on said spring Leccese against furthermovement upon engagement of said binding` post by said strip.

2. In a loose leaf binder, a frame includ- .ing a binding post and ahollow bar having a slot in one of the walls thereof, a post engagingstrip slidably mounted in said bar, a spring member one end of which `isfastened to said strip, an operating` button on said spring member, saidbutton extending exteriorly of said bar through said slot, a projectionon said bar, and means on said spring member. for engaging saidprojection to lock the parts against further movement upon engagement ofsaid binding post by said strip.

3. In a loose leaf binder, a frame includ? ing binding posts and ahollow bar, a'pivotally mounted disc in said hollow bar, post engagingstrips connected to opposite sides of said disc and adapted to move inopposite directions into post engaged and disengaged positions, a springmember having one end fastened to one of said strips, jan actuatingbutton on said spring member projecting exteriorly of said hollow bar,and means on said spring member and said hollow baradapted forengagement to retain said mechanism in post engaged position.

4. In a loose leaf binder, a frame including binding posts, a hollowbarhaving al slot therein and an inwardly extending projection adjacent tosaid slot.l a disc pivotally V engaged positions, said strips being piv`otally mounted on opposite sides of said disk to move in oppositedirections, and an actuating lmember connected to one of said strips andextending through said slot, said member being yieldable transversely tothe longitudinal axes of said strips and rigid relative to itslongitudinal position therewith, and means on said member adaptedl toengage said projection when said strips areV in post engaged position. v

ln testimony whereof I hereunto affix my signature this 16th day ofDecember. 1924.

CORBON L. HARVEY.

